Knife construction.



H. HANSTEIN.

KNIFE CONSTRUCTION.

APPLlcATloN msn Nov.14. 1911.

Patented J une 25, 1918.

INVENToR J/nyJVaM/e/n A, BY

ATTORNEYS A HENRY HANSTEIN, 0F POUG'HKEEPSIE, NEW YORK.

KNIFE CONSTRUCTION.

Specification of Letters Patent.

Patented June 25, 1918.

Application led November 14, 1917. Serial No. 202,002.

To all whom t may concern.'

Be it known that I, HENRY HANSTEIN, a citizen of the United States, residing at Poughkeepsie, in the county of Dutchess, State of New York, have invented certain new and useful Improvements in Knife Construction, of which the following is a speciiication.

My invention primarily has for its purpose to provide a new and improved construction of pocket knife and it more particularly has reference to that type of pocket knives in which provision is made for so incasing the blade or blades, when shut, that they may be the more conveniently and safely carried in the pocket and rendered dirt and dust proof.

My invention embodies, in a knife of the general character stated, certain improved features of construction including an improved arrangement of the blade holding possible in the use of the ordinary fitted casing to adapt the same for holding the blade, so that, when closed, it is impossible to come into contact therewith, and an improved arrangement of spring members that hold the casing or blade covering members secure in their closed position and the blade positively locked to its open position, that danger of the blade accidentally closing onto the hand or lingers of the user, as is knife blades, is entirely overcome.

With other objects in view that will hereinafter appear, my invention consists in certain features of construction and novel combination of parts, all of which will be described in detail,specifically pointed out in the appended claims and illustrated in the accompanying drawings, in which:

Figure 1 is a side elevation of my improved construction of pocket knife, the

parts being at their closed position.

Fig. 2 is a similar view, one half of the blade casing being shown swung down to permit movement of the blade to the open position.

Fig. 3 is a view similar to Figs. 1 and 2,

the casing members being shown closed to form a complete handle and the blade opened out ready for use.

Fig. 4 is an end view of the closed knife, looking in the direction of the arrow w on )g4-ig. is a lvertical section thereof, parte being in elevation `and taken substantially on the line 5-5 on Fig. 1.

Fig. 6 is a horizontal section taken on the line 6-6 on Fig. 1.

In the drawings, I have illustrated a de velopment of my invention in the nature of an ordinary pocket knife but I desire it understood my invention may be readily adapted for providing an improved hunting knife or table forks, combs, and such other articles that include a casin and an upper spring hinged to lfold into t e casing when not in use.

In carrying out my invention, I make the casing or handle portion of my improved knife construction of two half sections 1 and 2 of substantially like construction, each consisting of a body member composed of a pair of oppositely disposed side portions, as is best shown in Figs. 5 and 6, by reference to which it will be seen the portions 1,0-10 of the half section 1 are attached, by rivets 32, to a front edge spring 3 and the portions 20-20 of the other half casing section 2 are attached to the back edge spring 30 by rivets 31-31.

At the upper end, the back casing or handle portions 20-20 have vertical extensions 21--21, each formed with a forwardly extended member 21'L that projects over and forms a cl sure for the upper ends of the front han le or casing portions 10-1O,I when the latter are at their closed position, as is clearly shown in Figs. 3 and 4.

The upper extensions 21-21 of the members 20-20 also serve as a cap or receptacle for the butt or hinged end of the blade 5 which, in my construction, as shown, includes a hinged portion 50 apertured for the hinge rivet 52 and located centrally between a pair of oppositely projected locking shoulders 51-51 at the blade butt. The hinged rivet 52 takes through the opposite cap-1ike extensions to firmly secure the upper handle or casing member and the blade together.

In the construction shown, the hinged member, the blade, is of somewhat less length than the hollow handle or casing so that the lower end thereof clears the bottom portion of the back spring 30 and, in practice, the size of the blade, the spring 30 and the hinged connection of the handle are relatively such that when the blade is shut up, as in Figs. 2, 5 and 6, the looking .halfhandle `sections at their Y,lower end in f the `manner shown; `and described, provision lug 35 of the said back spring BO so engages the jadjac'lentilocking' shoulder on the .blade that thev knife edgeis held from striking or bearing solid against the saidbaclrspri'ng'as shown.

The front part of the hollow `handle or casing is hinged at its lowerend to' the lower `end of the back half in the ,manner "best shownin 2` which ilhistrates the lower end of the back spring. 30, which spring yis firmly attached to the lower end of `the staidlback section (by yrivets 3l), terminates in a forwardly projected substantially tween the opposite sideportion ofthe front handle A or casing member, `engages the inner face oflthe'` lower end of the front edge Y Y spring 3 and is hinged to the vsaid casing member i by a Vrivet. 7.

,By reason lof'l pivotally yjoining ,the'rtwo is forfvaitight `spring snap closureY of Athe Itwo parts when the front section is swung up,` ont h e lines indicated in Fig. 2,

ltoflthe rfully Aclosed position, as `shown in Figs; Y* l K lidi ill -begnoticed ,from the drawings that kthe :frontdedge vof the spring 30 eX- .tend-s beyend the 'upper end of the side lO-#f1.0 andhajs a locking lng 36 thatwengages with either' of lthe locking 7 shonlders in the blade butt,- when theVV blade is in ,t e bentzor closed position.

In,-the,fini hed product, all of i the corners or .e'dgesof the different parts of ,the hollow handle or casing are sufficiently rounded of'r1 f .to ,PIZeYQnt 'tearing the pockets in; which the `article may be carried- Y ,From therforegoingdescription talien in `connecfon kwith the drawings, my improved ,kfnie construction andthe advantagestherefof nl readily apparent H :When Vopen and innse with the front handleV sectionclosed,l the blade will be'Y stationl ally anA immova-ble,` ,therefore,` ,the danger fr ofthebladeclosingbach as in the ordinary pocket glnife, is 4done away withand since e `onefhalf of the'handle `must Ybe opened befor'e the vlvJlade `can ybe moved out or turned the handle ,orcasing is, under either adjustment of the blade, closed against the collection of Ydirt or dust therein. ,f

Ihelarrangement 'of thebach andthe front edge springs is snehV that the bladeV can be opened or closed easier thanis usual with ordinary types lof knife blades, as'Y the s'rnigs, by reason of the arrangement Y shown, ,need `not be so strong as is usually. v

knivesthe conventional types of pocket Y the claims, the term blade is intended ,to inde :not only a cutting implement, as 1g but any other that 4 for convenience etymaybe hingedly connected to the ,fixed half section, said end having provision casing or handle structure and for being extended therefrom or Ainclosed within the handle or casing portions.

I claim is: t l'. An implement holder, comprising two substantially alike half sections, one a relatively fixed section and the other an oppos- Vingfhalf section, means for pivotingan implement 'in one end of the said relatively fixed half section, said end having provision whereby the said implementvmay be located in either an extended or' in a closed position,

' the said. relatively vfixed/half section having a longitudinal recess to receive the said innplement when the sameis `the closed llosi tion, means for hingingthe other or op'pos#l ing half section tothat end .ofthe relatively fixedhalflseetion Awhich is'opposite the end Y to which the implement is hinged, the said hinged half section lalso having a recess whereby, when said half sections, are closed together, the same will incase said implement, when such implementis in the closed position, the said implementhaving a shouldered butt at the hinged end,4 and resilient latch elements carriedbyv the half members and coperative withthe shouldered butt ,for retaining the implement either in the eX- tended or inclose'd positions.`

2. An implement holder,V comprising two substantially alike half sections, one a' relatively fixed section andtheother an opp'os-Yv ing half section, lmeans for ,pivoting an implement in one endof the said'relatively dered butt at the -hingedend and resilient latch elements carried` by theY half members and coperative withtheshoulderedbnttfor retaining the implement eithergin the eX- tended or inclosed positions,- and a cam latch connection between said half sectionsfor.

holding the said sections `together orsepa! rated according to thev position of the hinged half section.

A blade holder comprising a relatively fixed half section, and an opposing 'half secl 125 tion, each ofthe said secti'onsbeingccom posed of oppositely 4 disposed members and a resilient spring held betweenthe respectiye Y said members along one edge thereof,V afblade pvptally mounted" at one end ofand between the opposite members of the said relatively silient springs having locking lugs at one fixed section to close down into the said relaend that coperate wlth the stop shoulders 10 tively fixed section, the pivoted end of the on the pivoted end of the blade and one of blade having a stop shoulder at each side the said springs including a lateral exten- 5 `of its pivot, the said opposing half section sion at its lower end that engages with the being hingedly connected to that end of the lower end 0f the other spring. relatively lixedly held section opposite the end in which the blade is pivoted, said re- HENRY HANSTEIN.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

